Free courses in the order a full stack web developer needs them: HTML, CSS and JavaScript for the page, TypeScript and React for the interface, Next.js for the server, SQL for the data, then Linux, Git and Docker to ship it. JavaScript runs on both sides, so you learn one language and use it end to end. Every lesson runs in your browser and every course section ends with a free certificate.
754,749+ codders enrolled across these courses
880 lessons969 challenges4,344 quiz questions
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A path certificate at the end, plus 16 along the wayEach step is an existing Coddy course. Take them in order, or jump into the one you are missing: your progress is saved per course either way.
Write real code, query databases, build websites, and master AI prompts. Our interactive lessons cover every skill modern developers need.
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January 2026
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Double or Nothing
Day 5 of 7
Streak Freeze
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Take your coding journey on the go! No setup, no downloads: just open and start coding. Available on iOS, Android and Web with 4.9 star ratings.
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Promotion zoneRead, listen, test yourself, ask the AI, or look up anything you've already covered. Every lesson meets you where you are.
A variable is a named container that stores a value you can reference later in your program.
In Python, you create one by writing the name, an equals sign, then the value you want to store.
The value can change over time. Reassigning the name simply points it to a new value.
Earn certificates for every course you complete. Add them to your LinkedIn profile and resume to showcase your coding expertise to employers.
Certificate of CompletionPython Fundamentals
Add to LinkedInA developer who can build both halves of a web application: the front end that runs in the browser (HTML, CSS, JavaScript and a framework such as React) and the back end that runs on a server (request handling, business logic and a database). In practice most full stack developers are stronger on one side, but they can ship a feature from the database table to the button that uses it without handing it to someone else.
Learn HTML, CSS and JavaScript well enough to build a page from a blank file, add one framework (React), learn how a server answers requests and how data is stored (Next.js and SQL on this path), learn Git, and build projects you can put online and explain. Employers hire on what you can show them, so the projects matter more than any certificate. This path is that sequence, in that order, and it is free.
Front end first. You see the result of every line on the screen, which makes mistakes obvious and keeps motivation up, and the back end is much easier to understand once you have built the page that calls it. That is why this path spends its first four steps in the browser and only then moves to the server and the database.
Because JavaScript is the only language that runs in the browser, so using it on the server as well means one language for the whole stack. Next.js, built on React, lets the same codebase render pages on the server, answer API requests and handle form submissions. If you would rather write the back end in Python, the Backend Developer path on Coddy teaches the Python route.
No. A bootcamp gives you a schedule, a cohort and career coaching, and charges for them; the skills themselves are the same ones this path teaches, and free material covers them well. What a bootcamp cannot shortcut is the practice: hundreds of small exercises and a few real projects. If you can keep a steady hour a day without a teacher checking in, a free path gets you to the same place.
Around nine to twelve months at an hour a day to reach a junior level. On this path HTML and CSS take six to eight weeks together, JavaScript and the browser two to three months, TypeScript and React about six weeks, Next.js a month, SQL three to four weeks, and Linux, Git and Docker another month. Building your own project alongside the later steps is what turns that time into a portfolio.
Yes. Every course on the path is free, including the lessons, the browser editors and terminal, the AI hints and the certificates. Each course section ends with a free certificate, verifiable at its own URL, that you can add to LinkedIn or a CV. Finish every step and you also get one certificate for the whole path, listing each course behind it.
Yes. Finish every step and you get one free certificate for the whole Full Stack Developer path. It lists each course you finished on the way, and links each course's own certificate, so anyone can check every skill it names. You can add it to your LinkedIn profile. It is a certificate of completion from Coddy, not an accredited qualification.
